CVE-2026-74614
In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: read virtqueues under worker locks Commit bd50c5dc182b ("vsock/virtio: add support for device suspend/resume") made the *_run flags transition from false to true when…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.14%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: read virtqueues under worker locks Commit bd50c5dc182b ("vsock/virtio: add support for device suspend/resume") made the *_run flags transition from false to true when restore installs replacement virtqueues. The RX, TX and event workers read their virtqueue before locking and checking the corresponding flag, so a worker delayed across freeze and restore can observe the replacement queue's running state while retaining a pointer to the deleted queue. Read each virtqueue under its mutex after checking the run flag, keeping the pointer and state in the same queue generation.
- CVSS 3.1
- 8.4 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.14% probability · 4th percentile
- CISA KEV
- Not listed
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1cecb4202afdbeddcf29d59baf596ac6ab753f7f
- https://git.kernel.org/stable/c/29dd10583bf9d2744cd84b862e4257c0a5699570
- https://git.kernel.org/stable/c/941329ce14c5f481223a10d1d4c8b57ea7f3048a
- https://git.kernel.org/stable/c/a1fb0c5b8a7c2753758aeced40971f99449dde0c
- https://git.kernel.org/stable/c/bd43a7ec668be428265b3209eb43647aedcf720a
- https://git.kernel.org/stable/c/eae099c764c7ebdb842eb1f638913e310bdd6513
- https://git.kernel.org/stable/c/ebac8f6b1ef0e9278afe204b8692a7479988dace
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.